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# Full Stack Developer - Senior

- **Company:** Guidehouse Inc.
- **Location:** Washington, DC, United States
- **Experience:** Expert
- **Salary:** $113,000.0 - $188,000.0
- **Contract:** Permanent contract
- **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), Agile Methodology, Amazon Web Services, Application Performance Management, Microsoft Azure, Cascading Style Sheets (CSS), Software Documentation, Continuous Integration, Data Migration, Relational Databases, Database Schema, Github, Hibernate (Java), Iterative and Incremental Development, Java Persistence API, PostgreSQL, Liquibase, OAuth, Oracle (Applications), Performance Tuning, Scrum Methodology, Openid Connect, Fortify (Software), Oracle Apex, Security Assertion Markup Language (SAML), Secure Coding, Software Engineering, SonarQube, Cloud Platform System, Okta, ReactJS, Spring-boot, Software Security, Gitlab, Git, Database Migration, Containerization, Gitlab-ci, Deployment Automation, Web Technologies, Front End Software Development, Software Version Control, Devsecops, Docker, Jenkins, Microservices
- **Published:** November 6, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9294682/full-stack-developer-senior

## About the Role

* U.S. Citizenship.
 * Active Top Secret clearance with SSBI at the time of proposal; TS/SCI eligibility as specified; ability to comply with FBI security requirements.
 * Proficiency in modern full-stack web development technologies, including HTML, CSS, JavaScript,
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 * Experience with front-end frameworks such as React and supporting libraries.
 * Minimum of three years of enterprise software development experience.
 * Experience with relational databases including PostgreSQL and Oracle, with competency in writing optimized queries.
 * Proficiency with version control using Git, including experience with GitLab or GitHub.
 * Experience working with Agile methodologies, including iterative development, sprint planning, and ongoing refinement of functional requirements and underlying architectural frameworks.

What Would Be Nice To Have :

 * Spring Boot and Hibernate/JPA experience.
 * PostgreSQL administration and performance tuning experience.
 * Liquibase or Flyway experience for database migration/version management.
 * undefined
 * Jenkins, GitLab CI/CD, or Azure DevSecOps experience.
 * SonarQube, Fortify, Aquasec or other secure code scanning tool experience.
 * OAuth2, SAML, or OpenID Connect experience.
 * Federal government modernization experience.
 * Experience delivering production-ready releases, deployment packages, and technical/user documentation.
 * Experience with containerized deployments; Docker and Kubernetes preferred.
 * Familiarity with cloud environments such as AWS, Azure, or similar.
 * Experience with Oracle APEX and Oracle PL/SQL modernization.
 * Experience designing and implementing scalable, distributed microservices architectures.
 * Keycloak Identity and Access Management experience.

## Description

What You Will Do : Guidehouse is seeking a skilled Senior Full Stack Developer to support the Federal Discovery Program and its associated technology. This role supports modernization of legacy Oracle APEX applications and functionality into a modern architecture using PostgreSQL, Java, and contemporary web technologies., * Implement authentication, authorization, auditing, and application security controls.

 * Perform data migration, validation, reconciliation, and database schema conversion activities.
 * Develop unit, integration, system, and user acceptance test support.
 * Support CI/CD pipelines, automated deployments, containerized deployments, and DevSecOps practices.
 * Troubleshoot production issues and optimize application performance.
 * Produce technical documentation, design artifacts, user documentation, and deployment guides.
 * Collaborate with architects, database administrators, cybersecurity personnel, testers, and business stakeholders to deliver complete application functionality as scheduled.